Rm whitespace in changelog

Author: ferhatelmas

CHANGELOG.md

@@ -25,13 +25,11 @@
 - Fixed few minor issues
 
 ## Oct 27th, 2019 - 1.1.0
-
 - Mark gems use for testing as development dependencies
 - Added `send_file`, `send_image`, `delete_file`, `delete_image`
 - Added `invite_members`
 
 ## Oct 19th, 2019 - 1.0.0
-
 - Added `channel.hide` and `channel.show`
 - Added `client.flag_message` and `client.unflag_message`
 - Added `client.flag_user` and `client.unflag_user`